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AI Overview
To create a light-sensitive alarm with a micro:bit, you’ll typically need a way to read light level (built-in on micro:bit via the LED matrix, or an external LDR/photocell) and a way to output an alarm sound (built-in speaker on micro:bit v2, or an external buzzer/speaker).
Best all-in-one kits (easiest)
- Kitronik Inventor's Kit for the BBC micro:bit ($52.05) — includes an LDR (light sensor) plus components for building sensor-triggered projects.
- Kitronik Alarm Clock Kit with ZIP Halo HD for micro:bit ($88.85) — designed around alarm-style projects and explores light and sound.
- Micro:bit Explorer's Kit ($101.95) or Micro:bit Explorer's Kit without Micro:bit v2 ($79.35) — broader kits with lots of guided tutorials for sensors + outputs.
Light sensor add-on (if you want an external photocell)
- Octopus Analog Photocell Brick OBPhotocell ($2.40) — a simple analog LDR light sensor module you can use to trigger the alarm at a chosen brightness threshold.
Sound/alarm output (if you need louder sound than the on-board speaker)
- Kitronik MI:power Board V2 for BBC micro:bit ($17.20) — adds portable power and a built-in buzzer for alarm beeps.
- Micro:bit Expansion Board Adapter ($12.15) — a breakout-style adapter with a mini buzzer, handy for simple alarm builds.
- Electronics Starter Kit for Micro:bit ($61.70) — a general-purpose kit for wiring components to your micro:bit (useful if you’re assembling the alarm from parts rather than a single kit).
Do you have a micro:bit **v2** (with built-in speaker) or an older micro:bit (v1.x)?
Do you want to use the micro:bit’s **built-in light sensing** (simpler) or an **external LDR/photocell** (more flexible placement)?
Showing 41-60 of 100 products
RGB LED Module
This RGB LED module gives your microcontroller project a simple way to add full-colour light. It uses a common-cathode through-hole RGB LED, with separate red, green and blue channels for mixing colours.Each colour channel has a built-in current-limiting resistor, helping protect the LED from bur...
Pimoroni Rainbow HAT for Android Things™ and Raspberry Pi
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The Rainbow HAT from Pimoroni has a buffet of sensors, inputs, and displays to explore Android Things™. Use it as a weather station, a clock, a timer or stopwatch, a mood light, or endless other things.Pimoroni collaborated with the Android Things™ team at Google to create this great add-on board...
Cubelets Curiosity Set
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The building blocks of better thinkers.Build, learn, and create more with the Cubelets Curiosity Set. Open a box of little robot blocks that will intrigue, fascinate, and inspire builders for hours on end. You’ve never seen building blocks like these. Cubelets make it easier than ever to explore ...
Learn to Solder Snowflake Christmas Tree DIY kit
Create your own festive LED decoration with this hands-on soldering kit. The Learn to Solder Snowflake Christmas Tree DIY Kit combines both through-hole and SMD components, giving you the opportunity to practice two different soldering techniques in one project. This kit produces a beautiful ill...
Raspberry Pi Pico/Pico W Breadboard Kit With 3.5 Inch Touch Screen Display LED Indicator On Board
The Pico Breadboard Kit with a 3.5-inch touch screen, mini PSP joystick, RGB light, buzzer, and two buttons is a versatile electronics kit designed for prototyping and experimentation. This compact kit combines various components to create interactive projects and offers a user-friendly interf...
micro:bit Go (On-the-go Starter Bundle)
micro:bit is a pocket-sized microcontroller designed for kids and beginners learning how to program, letting them easily bring ideas into DIY digital games, interactive projects and robotics.micro:bit comes with a variety of on-board modules, including a 5x5 LED matrix (also supports light detect...
DIY Synth Kit
Combining electronics, making, and creativity to inspire music lovers A fun, hands-on kit for kids that teaches them how to build their own portable synth. It’s perfect for kids who are ready to really get into the nitty-gritty of how circuits and electronics work. Make Plug the components int...
nOOds - Flexible LED Filament - 3V 300mm long - Red
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Our favorite food when hacking on code or electronics is a hot bowl of noodles - and around NYC these are often called 'noods'! What we've got here are flexible LED noodles, in different lengths and colors. All are not good for eatin' but they are good for cool lighting effectsThese are often see...
Mood Light - Pi Zero W Project Kit
A complete project kit for building a modern, internet-connected mood light powered by a Raspberry Pi Zero W and the Unicorn pHAT's 32 programmable RGB NeoPixel LEDs. The pendant-style stand and diffuser cast beautifully soft, colourful light — perfect for a bedside table, bookcase, or desk. Set...
nOOds - Flexible LED Filament - 3V 300mm long - Blue
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Our favorite food when hacking on code or electronics is a hot bowl of noodles - and around NYC these are often called 'noods'! What we've got here are flexible LED noodles, in different lengths and colors. All are not good for eatin' but they are good for cool lighting effectsThese are often see...
Micro:bit Honeycomb Smart Wearable Programmable E-Textile
Upgrade your coding and E-Textile Project with the Keyestudio Micro:bit Honeycomb Ultimate Kit. This smart wearable kit allows you to write code and control various sensors and modules with the Micro:bit main board and Microsoft's online graphical programming platform, MakeCode. With easy-to-use ...
RBG LED is a extendable strip light with RGB LED 200cm
A 200 cm extendable RGB LED strip using digitally addressable WS2811 NeoPixel LEDs with a Grove connector. Each LED can display its own colour and brightness independently, and multiple strips can be daisy-chained together to create longer displays. Compatible with M5Stack units via the Grove A ...
DFRobot Flexible RGB LCD Backlight Module
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This thin, flexible RGB light-emitting panel is designed for embedded systems, custom LCD backlights and diffuse indicator lighting. It uses separate red, green and blue channels to produce RGB colour output, with a common anode interface for driving from your own electronics.The bendable panel c...
Etched Glow-Through Keycap - Zener ESP Square Design
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When we saw the classic "Zener ESP Card" designed keyboard in the awesome CHVRCHES video for the song "How Not To Drown" (ft Robert Smith!) we were smitten. So goth! So esoteric! So we got a small number of these etched-through keycaps with the 5 designs: circle, cross, waves, square, a...
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5V COB LED Strip Light - Green
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This compact green COB light bar provides bright, even illumination for decorative lighting and small embedded projects. It uses 16 densely packed COB LEDs under silicone encapsulation to create a smooth luminous surface without the dotted look common on traditional LED strips.It runs from a simp...
Kano Pixel Kit – Learn To Code With Light
Build and code 128 dazzling lights. Paint pictures, make animations, play with 16 million colours. Learn to code art, games, live data, weather apps, sports tickers and more. Perfect for beginners, expansive for experts. Endless play with a creative community.Build and code 128 dazzling lights an...
Yahboom micro:bit smart robot car with IR and APP
Yahboom micro:bit smart robot is developed with the most popular Micro:bit board as the core controller. Using Micro:bit dot matrix screen as the body, the entire vehicle adopts elaborate metal motor, high-quality battery and firm bracket to create a compact and beautiful appearance. And it is co...
Arduino Nano BLE Sense Rev2
The Arduino Nano 33 BLE Sense Rev2 packs a powerful nRF52840 processor, Bluetooth 5.0, and an impressive array of on-board sensors into the compact Nano form factor. With a 9-axis IMU, microphone, gesture/light/proximity sensor, barometric pressure, temperature, and humidity sensors built in, it'...
Sphero RVR+ Programmable Robot
RVR+ is Sphero’s revolutionary take on the programmable robot and is optimised for high school classrooms and makerspaces. It’s drivable right out of the box, packed with a diverse suite of sensors, and built for customisation. RVR+ is expandable and made for novice to advanced programmers. Stud...
Kitronik Discovery Kit for Raspberry Pi Pico (Pico Included)
Take your first steps in Python and physical computing with the Kitronik Discovery Kit for Raspberry Pi Pico (Pico Included). The Kitronik Discovery Kit for Raspberry Pi Pico (Pico Included) is a great way to learn about microcontrollers, Python coding, and physical computing. The kit is suppl...
